Mechanism for operating doffer-combs of carding-machines



(No Model.) 2 Sheets-Sheet 1. H. s; H. A. STONE.

MEGHANISM-FOROPERATING BUFFER-COMES OF CARDING MAGHINES.

No. 258,499. Patented May 28, 1882.

TWKHQSsQS XnxYeNmvs N. PETERS PhnlmLfihcgmpher, Washington a c MOdBU 2Sheets-Sheet 2 H. & H. A. STONE.

MECHANISM FOR OPERATING DOFFER-GOMBS 0F GARDING MACHINES.

No. 258,499 Patented May 23, 1882.

WXWBSSQS. xmfn cors I ngrnpher. Washington. D. c.

UNITED States PATENT arrest HARLEY STONE AND HARLEY A. STONE, OF WORCESTER, MASSACHUSETTS.

MECHANISM FOR OPERATING DOFFER-COMBS OF CARDlNG-MACHINES.

SPECIFICATION forming part of Letters Patent 'No. 258,499, dated May 23, 1882.

Application filed November 14, 1881. (No model.)

.T 0 all whom it may concern Be it known that we, HARLEY STONE and HARLEY A. STONE, both of the city and county of Worcester, and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Mechanism for Operating Doft'er-Oombs of Oarding-lVIachines; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and in which Figure 1 represents a top or plan view of a doffer-comb with our improvements applied thereto, as will be hereinafter more fully set forth. Fig. 2 represents a front side-view of the parts shown in Fig. 1, looking in the direction indicated by arrow 2, same figure. Fig. 3 represents upon an enlarged scale a vertical section through the head of the doffercomb, taken on line A B, Fig. 1, looking in the direction indicated by arrow 1, same tigure. Fig. at represents, upon the same enlarged scale as Fig. 3, avertical section through the head of the doffer-eomb, taken on line C D, Fig. 1, looking in the direction indicated I by arrow 2, same figure.

Our invention relates to means for imparting to the dofl'er-comb of a carding-machine its vibratory motion.

It consists in a hub secured to the innerend of the driving-shaft of the doffer-eomb, which hub is provided with a circular groove out of center with the center of said hub, for receiving a ring of the same size and shape as said groove, said ring being in turn provided with a pin extending out from its side, which passes through the lower end of a crank-lever, connected at its upper end to a hub secured to the doft'er-comb shaft, whereby the C011] b-blade is given a vibratory movement up and down when said driving-shaft and its eccentric hub are in operation.

To enable those skilled in the art to which our invention belongs to make and use the same, we will proceed to describe it more in detail.

In the drawings, G represents the drivingpulley of the doft'er-comb, which is connectedv by belt with a driving-pulley upon the cardjug-machine. Said pulley is secured to the outer end of the driving-shaft H of the doft'ercomb. The partmarked Irepresents the combhead; J, the comb-shaft; K, the comb-blade;

L, the tension-rod, and M M M M arms upon U which are supported and held said blade K and rod L.

Arms M M M M are supported upon the comb-shaft J, openings being made through their hubs M M through which said shaft is passed. Hub M is rigidly secured to the shaft by means ofa holding-screw, a, which passes through said hub and into the shaft, while hub M is loosely fitted upon said shaft, so that a greater or less degree of tension may be produced upon the blade K by turning a nut, b, up against said hub, threads 0 being formed upon the comb-shaft for the purpose.

The comb-blade may be fastened tot-he outer ends of arms M M in any suitable and convenient manner. In this instance they are riveted to said ends.

Tension-rod L is held in the outer ends of short arms M M which extend back upon the same line as M M, by forming slots 0 c in the ends of said arms for the insertion of the ends of the rod. Heads ff are formed upon the end of the rod for holding said rod longitudinally, and ears or flanges g 9 project lat erally from each side of the ends of the arms for holding the rod from slipping out of slots 0 8 when the rod and arms are in the position shown in Figs. 1 and 3 of the drawings, with the blade K tightened up.

The bearings of comb-shaft J, collar N, and springO being described and claimed in thepatent granted to as June 28, 1881, No. 243,650, en

titled Meehanism for Opera-tingDoffer-Oombs of Caroling-Machines,no further description of said parts is here necessary.

As will be understood, the doffer of a carding-machine comes upon a central longitudinal line with the comb-shaft ot' the dofl'ercomb, with its surface at a proper distance from the blade K for said blade to draw off the stock from said dolfer as it is carried forward by the up-and-down vibratory motion of said blade.

Several different methods have been em ployed for imparting the aforesaid vibratory motion to the blade K, none of which have proved entirely satisfactory; hence the production of our invention.

In the operation of the dotfer-comh in comb- Y rattle and noise.

ing the cotton or wool from the carding-machine the comb-blade vibrates up and down about a thousand strokes a minute, so that it will be readily seen that the wear on the several moving parts is very great.

Heretofore the eccentric device which operates the dotfercomb only had a bearing upon one surface. Consequently in a comparatively short time the friction on such surface would wear away the metal, so that the parts would fit loosely, and there would be a continual The dofi'er-comb vibrating up and down at such a high rate of speed, unless all the parts work true and smoothly, the blow of the comb-blade would be irregular, and thereby increase the wear and rattling of the different parts. By our invention we obviate these difficulties which have previously existed, and can run the dotfer-comb at a very high rate of speed without occasioning such wear of the parts, and whereby the blow of the dofi'er-conib blade is rendered uniform. This desirable result we accomplish by the circular ringlt, inserted in the, hub P, as shown, so that there will be a bearing on the outer as well as the inner surface of the ring, and if the metal becomes worn upon the inner the bearing on theouter surface will prevent its wabbling at all, and vice versa, thereby causing all the parts to run evenly and true, and thus preventing any great wear of the surfaces of the ring and the parts in contacttherewith.

A further advantage of our invention is that by having an outer and inner bearing upon the ring R, the chamber 1 being kept partially full of oil, there will always be a surface of oil between the two surfaces of the ring R and its bearings, so that at the ex tremity ofthe stroke of the comb-blade-where there is always a tendency for the surfaces to come together and exclude the oil, and wear away the metal by frictionby our invention there are two surfaces of oil to be overcome and excluded between the wearing-surfaces of the ring, thus preventing to a great extent any wear of the parts. This is a great advantage over other machines heretofore constructed, where there is only one surface of oil to be excluded between the wearing parts.

It is found in mechanisms for operating dotfer-combs, as heretofore constructed, that at certain points in the revolution of the eccentric pin, or of the strap or chamber inclosing the same, some particular portion of the wearing'surface, being softer than other portions, wears out quicker, and, as before explained, very slight play causes great disturbance in the motion of the dott'er-comb. Vith our iiivention it will be observed that both the inner and outer surfaces of the ring R take a bearing, thereby preventing any wabbling of the parts, unless both the inner and outer surfaces are worn away in the same linc--a contingency so little liable to happen as to render our invention very perfect both in construction and practical operation, as has been proved by actual test. In this instance a hub, P, is secured to the inner end of drivingshaft I1, inside of head I, in which is formed an eccentric circular groove, Q, (see Figs. 3 and 4,) and in said groove is titted a ring, It, which is provided with apivot pin, it, by means of which the lower end of a crank-lever, S, is hinged to said eccentric ring R. The upper end of lever S is formed or secured upon a hub, S, which in turn is secured to combshaft J. Therefore when driving-shaftH and its hub P are turned eccentric ring t is made to turn independently in its groove Q, thereby imparting to arms M M and blade K an upand-down vibratory movement, as is fully represented by full and dotted lines in Fig. 3 of the drawings.

' Theparts which operate the arms and blade are protected from dust and other substances liable to clog said parts when in operation by means of a cap-piece, 1, which is screwed into the side of head I, as shown in Fig. 4. Upon said cap-piece is formed a bearing-hub, F for driving-shaft H to turn in, which is lined upon the inside with Babbitt or other similar soft metal, 7a.

In practice the aforesaid dotl'er comb is socured by means of bolts T T to the framework of the carding-machine at the proper place for the blade K to act in connection with the doffer of said machine, as before described.

e hereby disclaim the inventions and devices described in the Letters Patent granted Edward \Vright October 15, 1878, No. 208,946. \Ve also disclaim the inventions and devices described in the Letters Patent granted to J. K. Proctor June 24, 1573, N0. 140,30-l, saidiuventions showing ordinary eccentrics, and plain eccentric-straps having no external hearing against the eccentric, besides having a ditt'erent arrangement of parts.

Having described our improvements in doffer-combs forcarding-machincs, what we claim therein as new and of our invention, and desire to secure by Letters Patent, is-

The combination, with the huh I, provided with an eccentric groove, Q, of the circular ring I, inserted therein as described, and provided with pivot-pin h, the dotl'er comb blade K, its shaft J, and crank-lever S, said parts being constructed and arranged in relation to each other substantially as shown and described.

HARLEY STONE. HARLEY A. STONE. Witnesses:

ALBERT A. BARKER, JOHN C. Dnwnv. 

